Shirley has previously discussed the loss of her brother David, who died by suicide 15 years ago, aged 44.

'I was having panic attacks. My nose started to bleed. I was vomiting. And then my mind and senses lost control,' Shirley said.

'You can’t control the ­emotions. I was crying over David, I was blaming myself,' she added. 'I was going back through all the years in my life, I was thinking I am not worthy.

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'Every negative emotion I ever had in my life, whether it be the husbands who were not great to me, or David, or my father, were all coming on that mountain. And I can only put it down to the altitude. It plays tricks on your mind.'

She continued:'One day when we were climbing really quite far up, because of the altitude I felt I could hear my brother talking to me.

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'I was overwhelmed with how tired I was. You start to become disorientated. I felt I could hear my brother going, "Shirley". It was really strange.

'But I had to remember I was doing this for David and anybody who’s got mental health issues.'